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TMS320DM8148_1109 Datasheet(PDF) 22 Page - Texas Instruments

Part # TMS320DM8148_1109
Description  TMS320DM814x DaVinci Digital Media Processors
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Manufacturer  TI1 [Texas Instruments]
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TMS320DM8148_1109 Datasheet(HTML) 22 Page - Texas Instruments

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Mailbox
Mailbox
Mailbox
Mailbox
Mailbox
Mailbox
Mailbox
Mailbox
Mailbox
Mailbox
Mailbox
Mailbox
L4
Interconnect
Interrupt
Interrupt
Interrupt
Interrupt
Mailbox Module
ARM Cortex-A8
C674x+ DSP
Media Controller
TMS320DM8148, TMS320DM8147, TMS320DM8146
SPRS647B
– MARCH 2011 – REVISED SEPTEMBER 2011
www.ti.com
2.11 Mailbox Module Overview
The device Mailbox module facilitates communication between the ARM Cortex-A8, C674x DSP, and the
Media Controller. It consists of twelve mailboxes, each supporting a 1-way communication between two of
the above processors. The sender sends information to the receiver by writing a message to the mailbox
registers. Interrupt signaling is used to notify the receiver that a message has been queued or to notify the
sender about an overflow situation.
The Mailbox module supports the following features (see Figure 2-4):
12 mailboxes
Flexible mailbox-to-processor assignment scheme
Four-message FIFO depth for each message queue
32-bit message width
Message reception and queue-not-full notification using interrupts
Four interrupts (one to ARM Cortex-A8, one to C674x, and two to Media Controller)
Figure 2-4. Mailbox Module Block Diagram
For more details on the Mailbox Module, see the Mailbox section of the Chip Level Resources chapter of
the TMS320DM814x DaVinci Digital Media Processors Technical Reference Manual (Literature Number:
SPRUGZ8).
22
Device Overview
Copyright
© 2011, Texas Instruments Incorporated
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Product Folder Link(s): TMS320DM8148 TMS320DM8147 TMS320DM8146


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